Aerogel Assembled by Two Types of Carbon Nanoparticles for Efficient Removal of Heavy Metal Ions.

ABSTRACT: Both sodium alginate and polyethyleneimine (PEI) have a good ability to adsorb heavy metal ions. PEI and sodium alginate were used as important precursors to synthesize positively charged carbon nanoparticles (p-CNDs) with hydroxyl and carboxyl, and negatively charged carbon nanoparticles (n-CNDs) with amino, respectively. The carbon nanoparticles (CNDs) aerogel with a large specific surface area and rich functional groups were constructed by self-assembled p-CNDs and n-CNDs via electrostatic attraction for adsorption of heavy metal ions in water. The results show that CNDs aerogel has good adsorption properties for Pb²⁺ (96%), Cu²⁺ (91%), Co²⁺ (86%), Ni²⁺ (82%), and Cd²⁺ (78%). Furthermore, the fluorescence emission intensity of CNDs

SUBMITTER: Yang XC 

PROVIDER: S-EPMC9329938 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature